The male of this new species can be distinguished from that of S. longituba and S. wuyi by the lack of anterior median eyes and having a rasper-like dentigerous process (Figs 5G, 6G, H). In the case of the two latter species, the anterior median eyes are present, and the rasper-like dentigerous patellar process is absent (Figs 3G, 4A, 9D; Yuan and Peng, 2014: figs 7, 9). It also differs from S. crassitarsa by having a tubular basal apophysis, and a smaller dentigerous process (Figure 6A, B, G–I). In S. crassitarsus, the basal apophysis is laminar, and the dentigerous process is larger (Figure 2 A–D, F). The female of the new species differs from S. longituba by having shorter copulatory ducts, each coiling with less than two loops next to the spermatheca (Figure 7I). In S. longituba, each copulatory coil around the spermatheca in more than two loops (Figure 4H). S. medogense further differs from S. wuyi by the absence of anterior median eyes, and by having a white pattern on the abdomen (Figure 5C, F), whereas the anterior median eyes are present and the abdominal white pattern is absent in S. wuyi (Figure 8D, F; Yuan and Peng, 2014: figs 7, 9).

Palp (Figure 6 A–I): Trochanter very long, subequal to 2/3 of femur length. Femur distally swollen approx. 2 times wider than proximally. Patella, complex, each modified with four apophyses (Figure 6H): basal apophysis long horned, almost as long as patella; two dorsal apophyses, one crooked and fingerlike, and another rasper- like dentigerous process (Figure 6I); a lateral apophysis straight, finger-shaped, protruded. Tibia with a dorsal apophysis and a dorsal trichobothrium (Figure 6 F–H). Cymbium bowl-shaped, as wide as long, covered with sparse long setae. Bulb simple, cone-shaped, tegulum smooth and flat, without any apophysis. Embolus long, strongly sclerotized, started at the middle margin of bulb, and ends in the above of subcentral bulb, coiled almost into two loops, distally tapering (Figure 6A, E).

Epigyne (Figure 7 G–I): Epigyne sclerotized, almost rectangular, about 2 times wider than booklung cover, vulva visible through the translucent integument; copulatory openings large, sub-rounded, closed to the epigynal posteromargin. Spermatheca globular, each with a width equal to 2/3 of the breadth of booklung cover, separated by a gap measuring around its own diameter; copulatory ducts coiled the base of spermathecae, starting near the rebordered epigynal posteromargin, and ended at the posterolateral margins of spermathecae; fertilization ducts short, and thin, connected with the bases of the spermathecae.